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Line Clipping Using Semi-Homogeneous Coordinates
(Blackwell Science Ltd and the Eurographics Association, 1995)
The dual intersection test is described. It is a new method for deciding whether a line intersects a window. The concept of semi-homogeneous coordinates is introduced. It allows us to define line segments in projective ...
Image Warping Using Few Anchor Points and Radial Functions
(Blackwell Science Ltd and the Eurographics Association, 1995)
Transformations based on radial basis junctions have proven to be a powerful tool in image warping. In the present work we decompose these transformations into linear and radial terms, and show examples where such a ...
Efficient Parallel Gouraud Shading and Linear Interpolation over Triangles
(Blackwell Science Ltd and the Eurographics Association, 1995)
A parallel raster algorithm to draw Gouraud shaded triangles is presented. At the heart of the algorithm is a new constrained parallel edge-traversal technique. This parallel traversal represents an increased level of ...
Symbolic and Numeric Computation in Curve Interrogation
(Blackwell Science Ltd and the Eurographics Association, 1995)
The control of shape of curves is of great importance in computer aided geometric design. Determination of planar curves convexity, the detection of infection points, coincident regions, and self intersection points, the ...
Isometric Piecewise Polynomial Curves
(Blackwell Science Ltd and the Eurographics Association, 1995)
The main preoccupations of research in computer-aided geometric design have been on shape-specification techniques for polynomial curves and surfaces, and on the continuity between segments or patches. When modelling with ...
An Algorithm for Perspective Viewing of Objects Represented by Octrees
(Blackwell Science Ltd and the Eurographics Association, 1995)
A new algorithm is presented for viewing three-dimensional objects, represented by an octree, from an arbitrary location. The algorithm generates aperspective view of the objects while eliminating hidden surfaces. The ...
Interactive Ray Tracing on a Virtual Shared-Memory Parallel Computer
(Blackwell Science Ltd and the Eurographics Association, 1995)
This paper describes the results of experiments with accelerated ray tracing on a virtual shared-memory parallel computer and attempts to determine whether this kind of architecture would be suitable for an interactive ray ...
Function Representation of Solids Reconstructed from Scattered Surface Points and Contours
(Blackwell Science Ltd and the Eurographics Association, 1995)
This paper presents a novel approach to the reconstruction of geometric models and surfaces from given sets of points using volume splines. It results in the representation of a solid by the inequality f(x,y,z) ? 0. The ...
The Compositing Buffer: A Flexible Method for Image Generation and Image Editing
(Blackwell Science Ltd and the Eurographics Association, 1995)
In this paper, we describe a new buffer architecture called the Compositing Buffer. Although it is based on the A-buffer architecture described by Carpenter1, the new architecture introduces two important ideas which make ...
A Geometrical Based Method for Highly Complex Structured Textures Generation
(Blackwell Science Ltd and the Eurographics Association, 1995)
Conventional 2D or 3D texturing methods do not permit an efficient simulation of highly complex structured textures like fire, fur, cotton, etc. More recent techniques, using specific kinds of 3D textures, such as hypertextures ...